1
2#include <iostream>
3
4using namespace std;
5
6int next() {
7  static int i = 0;
8  cout << "incrementing " << i << endl;
9  return ++i;
10}
11
12int main() {
13  int i = 0;
14  while (i < 5)
15    i = next();
16  return 0;
17}
18